Perhaps you should try some spelling variations:
song ming » song bing, song min, gong min
song minh » sang minh, song min, gong min
yan yang » yang yang, dan yang, tan yang
yao yang » yang yang
long shu » cong shu, tong shui, long du
xi lu » xu lu, li lu, yi lu
wang » wing, wan, lang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yan yang) or (yao yang)) ((xi lu) or (xi bu)) ((song minh) OR (song ming)) long shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yan yang) OR (yao yang)) ((xi lu) OR (xi bu)) ((song minh) OR (song ming)) long shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yan yang) or (yao yang)) ((xi lu) or (xi bu)) ((song minh) OR (song ming)) long shu ;*".